body {
    font-family: 'Inter', sans-serif;
    background-color: #f4f5f7;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 450px;
    margin: 1rem;
}

.header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
}

.header p {
    color: #6b7280;
    margin-top: 0.5rem;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.btn {
    display: block;
    width: 100%;
    text-align: center;
    background-color: #3b82f6;
    color: white;
    font-weight: 700;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    transition: background-color 0.2s ease-in-out;
    box-sizing: border-box;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #2563eb;
}

.btn:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-field {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

#message {
    text-align: center;
    font-size: 0.875rem;
    margin-top: 1.5rem;
    min-height: 1.25rem;
}

.message-success {
    color: #16a34a;
}

.message-error {
    color: #dc2626;
}